Nathan white



' (No Model.) 2 Sheets-Sheet 1.,

N. WHITE.

AIR AND GAS MIXER.

9 Patented Jan. 5, 1897,

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2 Sheets-Sheet. 2.

(No Model.)

.-N. WHITE. AIR AND GAS MIXER.

Patented Jan. 5, 1897.

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1 Noam mans co.. mmro-Lnnmwlsumn-run n NITED STATES PATENT FFICE.

NATHAN l/VHITE, OF PASADENA, CALIFORNIA, ASSIGNOR TO EDITH WVHITE, OFSAME PLACE.

AIR AND GAS MIXER.

SPECIFICATION forming part of Letters Patent No. 574,595, dated January5, 1897.

Application filed October 16, 1896. Serial N0. 609,142. (No model.)

To all whom, it man concern.-

Be it known that I, NATHAN WHITE, a citizen of the United States,residing at Pasa dena, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Maximum Air and Gas Mixer, ofwhich the following is a specification.

My invention relates to that class of machines by which to mix air withgas or with to vapor from 'gasolene or other volatile substances forfuel and light.

The obj eot of my invention is to provide an air and gas mixer whichwillmix a maximum charge of air and gas or air and vapor in a minimumlength of time, then to allow the same to escape from the mixer beforeanother charge is mixed.

It is necessary, in order to perfectly accomplish this result, that theair and vapor or air and gas be freely admitted into the receiver untilthe receiver is filled, and then the supply be shut off until the chargehas been drawn out. The valve which controls the inlets must open andclose as quickly as pos- 2 5 sible.

It is desirable that the receiver shall not hold a large quantity of themixed air and vapor, so that the supply to the burners will always bewell mixed and of uniform quality;

0 also, that the pressure of the holder on the gaseous mixture will beas uniform as possible, and that the inlet-valve be operated with suchforce that it will not be blown open or held open by the inflowing airand vapor or My invention accomplishes these desirable ends. It appliesto that class of air and gas mixers in which the air and gas areintroduced into the receiver through separate inlets and become mixedwithin the receiver, and it-comprises means by which the inlet-valvewhich controls the inlets is operated positively and practicallyinstantaneonslyto admit the air and gas or vapor to fill the receiverand to as instantaneously shut off the inflow of air and gas or vapor toallow the receiver to empty.

The accompanying drawingsillustrate my invention.

Figure 1 is a fragmental perspective view The valve is shown open anddotted lines indicate the position of parts when the valve is closed.Fig. 2 is a fragmental elevation viewed at right angles to Fig. 1 and insection on two planes, cutting, respectively, through the guide for theholder and through the valve and inlet-pipes.

My invention comprises the combination, with a gas-tank A, having anair-inlet a, a gas orvapor inlet a, and a gas-outlet a", and a sealedholder A, which covers the tank and is arranged to rise and fall withrelation thereto, of a valve 13 to close the said inlets;

a lever 11, carrying such valve; an. overbalance weight b, the samebeing movably mounted on the valve-lever b and'having its path from sideto side of a vertical drawn from the pivot b of the valve-lever; stops 12, connected with the valve-lever to stop the weight b at the ends ofits path; an auxiliary weighted lever O, the weighted arm 0 of which isadapted and arranged to move the center of gravity thereof from side toside of a vertical drawn from the pivot of such lever;

stops 3 4 on the valve-lever arranged in the path of the auxiliary leverC on opposite sides of a vertical drawn from the pivot 17 of the lever acatch 5, connected with the holder A to rise and fall therewith, and twocatches 6 7, connected with the auxiliary lever and arranged,respectively, above and below the catch 5, carried by the holder andhaving their paths respectively extending into the path of the catch 5.

The catches6 and 7 are arranged to play such a distance that when thelever C'is tilted to open the valve, as shown in solid lines in Fig. 1,the catch 6 will be below the upper end of the path of the catch .5, andwhen the lever is in position with the valve closed the catch 7 will beabove the lower end of the path of the catch 5; but the greater portionof the path of the catch 5 will be unobstructed, so that the holder canmove freely throughout the greater portion of the time during which thereceiver is filling or emptying. When the catch 5 has risen so as toengage the catch 6 and lift it suffieiently to tilt the lever 0 farenough toward the valve to move the center of gravity of the weight ofsuch [00 lever to that side of a vertical drawn from the pivot of suchlever, the lever will overbalance and the weight will strike upon thestop 3 and rest thereon, thus to overbalance the valve-lever and startit toward closing the valve. The movable weight Z) on the valvelever Cwill then fall into position and assist to close the valve and to holdit closed against the air and gas pressure. These weights also cause thelever to throw the catch 7 up into the path of the catch 5. When thereceiver falls, by reason of the discharge of gas through the outlet a,the catch 5 will pass freely downward until it strikes the catch 7 andpushes it down until the lever C is again overbalanced away from thevalve. The said lever then strikes, the catch 4 and tilts the valve-]ever and opens the valve. The movable weight b will move back to thefirst position away from the valve, thus to assist in opening it. At thesame time the weights cause the lever to throw the catch 6 down into thepath of the catch 5, ready to be lifted when the holder has risen andthe receiver is filled.

In practice the movable weight on the valve-lever is preferably arolling weight and is preferably a ball, as shown, and the stops at theends of the weight-runway are cushioned with cork or some other suitablesubstance which will not be affected by the gas or vapor.

The weighted lever C is also provided with a rolling weight, such as theball 0, which rolls in the weight-runway 0 which corresponds to theweight-runway of the valvelever. The stops 1 2 at the ends of thisrunway are cushion ed like the stops 1 and 2. The stops on thevalve-lever have paths which extend, respectively, on opposite sides ofa vertical drawn from the pivot of the lever. This is also true of thestops on the auxiliary lever. In practical construction the paths of thestops 1 and 1 preferably extend across such vertical and the movement ofthe levers tilt the runways so that the ball-weights will roll past thevertical drawn from the pivot of the levers whenever the levers aretilted from side to side of such vertical; and it is desirable that butslight tilting of the levers should be effective to roll the balls fromend to end. thereof. The halls are preferably of lead.

The stops 3 and 4 on the valve-lever are preferably cushioned to preventany noise caused by contact therewith of the auxiliary lever.

D indicates a cushion-stop to stop the val velever when in its openposition.

The valve B comprises two caps S and 9, which set down over theinlet-pipes a a, which respectively conduct air and vapor into thereceiver. The upper ends of these pipes are surrounded by channels ff,which are partly filled with mercury to form seals g, into which thecollars of the caps 8 and 9 will be inserted when the valve is closed.The

collars of the caps are thin and sharp-edged at their lower or freeends, so that they will not displace any large quantity of mercury.

I-l indicates a cushion-stop which supports 1? indicates a seal for theholder. The outer wall J of the chamber which contains the seal.

extends up and is capped over to inclose the holder.

j indicates an air-passage to relieve and supply the atmosphericpressure between the cap and holder as the holder rises and falls.

The stops 6 and 7 are preferably mounted on a rod K, which connects thecatches with the lever C.

F indicates acastmetal valve-base having the seal-channels) f, and thepipes a a are screwed into this base.

L indicates packing around pipes at a, and M m on indicate a clamp-plateand nuts on the pipes to secure them and the valve-base in place.

It is to be understood that the air and vapor supply pipes are eachprovided with an index-cock of any of the well-known forms, so that therelative proportions of air and gas or vapor admit-ted to the tank canbe readily determined. The cocks are not shown in the drawings; buttheyare common in this class of machines, and illustration thereofherein is not necessary.

Now, having described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a gas-tank having an air-inlet, a vapor-inletand a gas-outlet, and a sealed holder which covers the tank and isarranged to rise and fall with relation thereto; of a valve to close thesaid inlets; a lever carrying such valve; an overbalance-weight, thesame being movably mounted on the valvelever and having its path fromside to side of a vertical drawn from the pivot of the valve lever;stops connected with the valve-lever to stop the weight at the ends ofits path; an auxiliary weighted lever, the weighted arm of which isarranged to move the center of gravity of the weight thereof from sideto side of a vertical drawn from the pivot of such 1ever; stops on thevalve-lever arranged in the path of the auxiliary lever on oppositesides of a vertical drawn from the pivot of the lever; a catch connectedwith the holder to rise and fall therewith; and two catches connectedwith the auxiliary weighted lever to move the same, and arrangedrespectively above and below the catch carried by the holder and in thepath of such catch.

2. The combination with a gas-tank having an air-inlet, a vapor-inletand a gas-outlet, and a sealed holder which covers the tank and isarranged to rise and fall; of a valve to close the said inlets; a levercarrying such valve and provided with a weight-runway with stops at theends thereof and which stops have paths respectively on opposite sidesof a vertical drawn from the pivot of the lever; a weight arranged insuch runway to move therealong; an auxiliary lever provided with IIO aweight-runway with stops at the ends thereof and which stops have pathsrespectively on opposite sides of a vertical drawn from the pivot of thelever; a weight arranged in such runway to move therealong; stops on thevalve-lever arranged in the path of the auxiliary lever on oppositesides of the vertical dI'aWHfIOIH the pivot of the lever; a catchconnected with the holder to rise and fall therewith; and two catchesconnected with the auxiliary weighted lever to move the same andarranged respectively above and below the catch carried by the holderand in the path of such catch.

3. The combination of the pivoted valvelever provided with aweight-runway having stops at opposite sides of a vertical drawn fromthe pivot of the lever; a rolling weight in such runway; an auxiliarylever' provided with a weight-runway having stops at opposite sides of avertical drawn from the lever-pivot; a rolling weight arranged to movealong such runway; and stops arranged on the valve-lever on oppositesides of said vertical in the path of the auxiliary lever.

4. A pivoted valve-lever carrying a valve and provided with aweight-runway having stops with paths at opposite sides of a verti caldrawn from the pivot of the lever; a weight arranged to move along suchrunway; an auxiliary lever provided with a weight-runway having stopswith paths at opposite sides of a vertical drawn from the lever-pivot; aweight arranged to move along such runway; and stops arranged on theValve-lever on 0pposite sides of said vertical in the path of theauxiliary lever.

NATHAN WHITE.

\Vitnesses JAMES R. TOWNSEND, ALFRED I. TOWNSEND.

